How to Deal with Excessive Interior Noise in a Car?
3 Answers
There are four solutions to car noise: 1. Engine Noise: The vehicle engine is a source of noise, and its noise production varies with the engine speed. Solution: High-grade sound-absorbing foam materials can be installed on the engine hood, which not only suppresses vibrations caused by the hood but also absorbs a significant amount of noise, with noticeable effects. 2. Tire Noise: Tire noise is generated by the friction between the tires and the road surface during high-speed driving. The level of tire noise depends on road and vehicle conditions; worse road conditions result in louder tire noise. Additionally, there is a significant difference in tire noise between asphalt and concrete roads. Solution: Tire noise is a type of structural noise, primarily caused by vibrations. The most reasonable solution is vibration damping. Adding damping plates along with sound-absorbing mats can effectively address road and tire noise. 3. Wind Noise: Wind noise occurs when the pressure of the wind encountered during high-speed driving exceeds the sealing resistance of the car doors, allowing it to enter the interior. The faster the driving speed, the louder the wind noise. Solution: Install or replace door sealing strips. Since sealing strips are rubber products, they can age over time, leading to reduced sound insulation and sealing effectiveness. 4. Body Structure Noise: This is mainly influenced by two factors: the vibration transmission method of the body structure and the noise generated by metal components of the body under internal and external forces. Solution: This issue rarely occurs in new cars. It is important to check whether the screws of body components have become loose. Generally, tightening the screws or replacing the parts can resolve the problem.
I always feel that the noise inside the car is quite loud while driving, which bothers me a bit. From my experience, the noise might come from tire wear or unevenness, so I check if the tire tread is too shallow or has scars. If so, switching to a set of quiet tires can reduce the humming sound. The engine compartment is also a major source, especially in older cars where a damaged hood insulation layer can amplify the noise. I tried adding soundproofing foam around the engine. Poor sealing around the windows and door gaps can cause whistling wind noise, so I bought a few dollars’ worth of self-adhesive rubber strips to reinforce the edges. Suspension system issues, such as worn shock absorbers, can cause squeaking on bumpy roads, so I went to the repair shop to check if they needed replacement. I’ve also developed a habit of regular car maintenance, waxing the body to reduce vibration noise. With these simple fixes, the noise is reduced, making driving more comfortable and helping to avoid potential failures.
I find the interior noise quite annoying, so I'll start by checking the tires. Both overinflation and underinflation can easily cause noise, so I'll use a tire pressure gauge to adjust them to the recommended value. If the tires are severely worn, I'll replace them with new ones—quiet-type tires work well. If the door sealing strips are aged, I'll replace them promptly; they're cheap to buy on Taobao and easy to install myself. If there's noticeable noise from the engine area, the sound insulation layer might be damaged, so I'll try adding a foam barrier. I'll also check if the window mechanisms operate smoothly and avoid opening window gaps in windy areas. While driving, I'll pay attention to speed control, as high speeds intensify wind noise. These small fixes don’t cost much, and handling them myself can significantly improve comfort. If the noise persists, I’ll then consider visiting a professional shop to check for potential chassis or suspension issues.
